@article {de Dios:2013:1947-2935:1940,title = "Insights Into the Molecular Recognition Mechanism of 5-Hydroxy-Indol Acetic Acid by Imprinted Xero-Gel Materials", journal = "Science of Advanced Materials", parent_itemid = "infobike://asp/sam", publishercode ="asp", year = "2013", volume = "5", number = "12", publication date ="2013-12-01T00:00:00", pages = "1940-1947", itemtype = "ARTICLE", issn = "1947-2935", url = "http://www.ingentaconnect.com/content/asp/sam/2013/00000005/00000012/art00017", doi = "doi:10.1166/sam.2013.1660", keyword = "XPS, ATR-FTIR, PHOTOELECTRON SPECTROSCOPY, MOLECULAR RECOGNITION, MOLECULAR IMPRINTING" abstract = "Molecular recognition by molecularly imprinted polymers is based on the interaction of the template molecule and the polymeric matrix, usually through hydrogen bonds and/or hydrophobic interactions. In this work, we used different spectroscopic techniques in order to shed light on the recognition process of 5-hydroxyindolacetic acid (5-HIAA) by a molecularly imprinted silica-based xero-gel. X-ray photoelectron spectroscopy as well as infrared spectroscopy is used to reveal the recognition process. From the data, a double interaction mechanism can be confirmed which involves (a) hydrogen bonds between the surface hydroxyl groups of the imprinted xero-gel and the hydroxyl-moiety of 5-HIAA and (b) stacking interactions among the aromatic residues in the xero-gel provided by the phenyltrimethoxysilane precursor and the indol group of the 5-HIIA.", author = "de Dios, Alejandro Sim{\’o}n and Fern{\’a}ndez-Gonz{\’a}lez, Alfonso and Bad{\’ı}a-La{\’ı}{\~n}o, Rosana and D{\’ı}az-Garc{\’ı}a, Marta Elena", }